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                   "Strong Interactions, Strings, and Extra Dimensions"




 Thursday, 19 May 2022

    Video-Recording for any system with MP4-support

   - Video.mp4  (ca. 431 Mb)

 15:15 – 16:20



                             The 2022 Oskar Klein Memorial Lecture


                                                Igor R. Klebanov



In the 1950s and 60s, many strongly interacting particles (mesons and baryons)

were discovered. String theory was originally invented to describe them, but

in the early 70s Quantum Chromodynamics (QCD) emerged as the precise theory

of the strong nuclear force. A quarter century later, it was understood that

string theory and certain gauge theories akin to QCD are different descriptions

of the same physics. I will review the relations between gauge theories and strings.

The formation of QCD strings is a manifestation of the confinement of colored

quarks and gluons. The Confinement is observed numerically using Lattice Gauge

Theory, and the gauge/gravity duality has shed new light on it, but its analytic

proof remains a deep unsolved problem in theoretical physics.

I will conclude by discussing some surprises in lower-dimensional models for QCD.


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